Across 3 review studies, all reported beneficial but small effects of Lactobacillus rhamnosus on skin health, including improvements in inflammatory skin conditions (e.g., acne, rosacea, psoriasis) and wound healing. Doses, study durations, and populations were not reported consistently, and no findings reached statistical significance. The small evidence base suggests preliminary support for skin benefits, primarily from probiotic or postbiotic formulations.
Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. Available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed). Many of the included studies did not reach statistical significance — effect may be smaller than the predominant direction suggests.
consuming Lactobacillus rhamnosus lysate powder
Topical probiotics have demonstrated beneficial effects for the treatment of certain inflammatory skin diseases such as acne, rosacea, psoriasis etc., and also found to have a promising role in wound healing.
probiotics in personal care products, specifically for oral, skin, and intimate care